1100-Watt, 12" SLIPSTREAM Ported Subwoofer Enclosure

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It’s for anyone looking to add bump in the trunk. The GT5-1202BR has exceptional motor structure venting for serious thermal power handling. Patented Slipstream port design maximizes bass output and minimizes turbulence – no chuffing or whooshing, just a deep, car-rocking bass. Turn it on and up – a progressive spider reduces distortion even at high output levels.

Item# GT5-1202BR

General Specifications

Enclosure Type Subwoofer Box
Size 12
Series GT5
Type Enclosed

Audio Specifications

Frequency Response 45Hz–150Hz
Peak Power 1100W
Power Handling (RMS) 275W
Nominal Impedance 2 ohms
Power Handling (Peak) 1100W


Width (in) 22-7/16
Depth (mm) 305
Height (mm) 369
Depth (in) 12
Height (in) 14-1/2
Click here for a complete list of all specs for this product
  • (1) GT5 1202BR 12" Preloaded Ported Enclosure
  • (1) Owner's Manual

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1 Year Warranty

Products purchased online or from an authorized local retailer and under warranty may qualify for an exchange with a valid receipt.

Purchases made from an unauthorized dealer will not be eligible for exchange.

Call us: 1.800.336.4525

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  • Parts and accessories
GT5-1202BR is rated 4.5 out of 5 by 6.
Rated 5 out of 5 by from Chose the right sub! Being a woman and choosing a sub woofer and going to an audio shop to have it installed and them being impressed with what I purchased really made this purchase so much more enjoyable. Hearing it and feeling it was the next best thing. This sub bumps more then anything I've heard even with dual 12" subs in a car combined. IT IS WELL WORTH THE PURCHASE, AWESOME JOB JBL!!!
Date published: 2017-04-22
Rated 5 out of 5 by from Awesome base! If you're looking for something that's loud and has really good base to the point it makes your seats feel like a massage chair then this is the one for you! hope however is reading this helps you out to choose the perfect one
Date published: 2017-02-22
Rated 5 out of 5 by from Awesome sub for the money! Picked one up for my Jeep Wrangler recently during the 50% sale. It fits like a glove behind the rear seat. Had to remove the aluminum guards to get her to fit, but now my Jeep rocks!
Date published: 2016-12-13
Rated 5 out of 5 by from Great for Rock had for just over 30 days and this thing rocks! I listen to classic rock and old country and this helps my truck sound like i'm listening in a concert theater. Best money spent. i
Date published: 2016-05-16
Rated 5 out of 5 by from $199.00. You'd be a fool not to buy it!! I don't recommend it. I'm telling you to get it!!! Hooked up to my GTO5355 amp, the clean, crisp, REAL bass will shake your head off.I have that combo in my 2000 Chevy Blazer and crank up some Carlos Santana and get a head massage. No joke. You want experience. I owned JBL floor speakers in the 80's and their QUALITY has NEVER decreased, NEVER. That price is sooo good.Wish I got it for that, but my next sub will definitely be JBL!!!!!!!
Date published: 2012-11-27
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Will need an extra amp for this on my 2016 Hyundai Veloster Turbo?

Asked by: Too GQ For You
The JBL GT5-1202BR has a rating of 275W RMS at 2 Ohms subwoofer. You need an amplifier that can accommodate these specs for sufficient performance.
Answered by: Mel at Customer Service
Date published: 2017-05-12

Does the GT5-1202BR have a built in amplifier?

Asked by: Jiji
No, the GT5-1202BR does not have a built-in amplifier.
Answered by: Erik at Customer Service
Date published: 2017-04-06

does this have a amp built in or do need to buy a separate one

Asked by: whoo
Unfortunately, the GT5-1202BR would require a car audio amplifier as it’s not a powered car audio speaker.
Answered by: Joe G at Customer Service
Date published: 2017-04-03

What amp would go good with this 12 in plus two 165 watt speakers and two 180 watt speakers that already in the car?

Asked by: Tbl1
Any 5-channel car amp that puts out 165W of RMS power or below will be good with these speakers. The GTR-7535 can put out 100W of RMS power, it will be a great match.
Answered by: Joe G at Customer Service
Date published: 2017-03-30

would a GX A602 work with this particular SW?

Asked by: joe1280
The GX-A602 amplifier is rated to be able to drive up to 85W of power to a 2-ohm load speaker and when bridged, it can drive up 170W of power to a 4-ohm load. The GT5-1202BR on the other hand is a 2-ohm speaker that can handle up to 275W. Given this, we know that the GX-A602 would not be recommended to be used with this amplifier. We recommend that you look at other amps, possibly a mono-block amp similar to the GX-A3001 that can drive 300W of power @ 2-ohms. This will be perfect for the GT5.
Answered by: Ren at Customer Service
Date published: 2017-02-03

I have a kenwood 600w amp what subwoofer would be suitable for this amp? 

Asked by: Chuckles
First, we have to know if the 600W rating on your amplifier is the peak or the RMS rating. Please check on your amplifier's specifications and check on its rating when running a single/bridged channel at 2-ohms, if it does not go over what the GT5-1202BR can handle which is 275W, this should work fine.
Answered by: Ren at Customer Service
Date published: 2017-01-29

Hi.Is GX-A604 this subwoofer appropriate?

Asked by: saskia
Yes, the GT5-1202BR would work well with the GX-A604 since this amplifier can deliver up to 85W of power to the GT5-1202-BR that can handle up to 275W of power.
Answered by: Ren at Customer Service
Date published: 2017-01-29

I have the Precision Power i1000.4 650W Class D Full Range 4ch Amplifier Currently. Would buying this amp and connecting it to that one still allow it to work? Or would I need to buy a new amp for this sub.

Asked by: BearZ
The GT5-1202BR is a passive subwoofer. With that said, no amplifier is built into the enclosure of the GT5-1202BR. The GT5-1202BR would totally rely on your vehicles amplifier. You would need a subwoofer amplifier for this particular model.
Answered by: Ross at Customer Service
Date published: 2016-12-02
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